red dwarf


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red dwarf

Any of a large group of main-sequence stars, mainly M and K stars, that are much cooler, smaller, and less massive than the Sun (about 0.1–0.7 MO ). The convective motion within these stars, in combination with their rotation, generates a magnetic field, and the stars display a range of magnetically initiated phenomena similar to and sometimes more energetic than those occurring on the Sun. These include starspots, flares, and hot chromospheres and coronae. See also flare stars; dwarf star.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
References in periodicals archive ?
Stellar flares from red dwarfs are particularly bright in ultraviolet wavelengths, compared with Sun-like stars.
One of the brightest red dwarfs, K2-155, is around 200 light years away from Earth, and has three transiting super-Earths, which are slightly bigger than our own planet.
One of the primary outcomes of the new research highlighted that the planets surrounding red dwarf stars may have exceptionally similar characteristics to planets orbiting solar system stars.
One of the brightest red dwarfs, K2-155 that is around 200 light years away from Earth, has three transiting super-Earths, which are slightly bigger than our own planet.
Capption: Illustration of an exoplanet orbiting a red dwarf star
The author examines gender, sexuality, and heroic quests in the British science fiction shows Doctor Who, Blake's 7, Red Dwarf, and Torchwood, drawing on Stuart Hall's encoding/decoding theory to show how producers of the shows encode productions and viewers decode them according to their own definitions, needs, and critical appraisal, in an ongoing process of engagement.
CULT classic TV sci-fi comedy Red Dwarf is making a comeback.
Sci-fi comedy classic Red Dwarf is making a TV comeback.